My Dearest Nemesis (Korean: 그놈은 흑염룡) is a 2025 South Korean television series written by Kim Soo-yeon, directed by Lee So-hyun, and starring Moon Ga-young, Choi Hyun-wook, Im Se-mi and Kwak Si-yang. Based on the webtoon of the same name by Hye Jin-yang, it revolves around a boss and an employee who shared a past relationship. It aired on tvN every Monday and Tuesday at 20:50 (KST) from February 17 to March 24, 2025. It is also available for streaming on TVING in South Korea, U-Next in Japan, Vidio in Indonesia, and Viki in selected regions.
Contents
Synopsis
It tells the story of Ban Ju-yeon (played by Choi) and Baek Su-jeong (played by Moon) who first meet via their online game characters during their school days, then meet again in real life as boss and employee 16 years later.
Cast
Main
Moon Ga-young as Baek Soo-jung
The planning team leader at Yongseong Department Store.
Choi Hyun-wook as Ban Joo-yeon
Moon Woo-jin as young Joo-yeon
The head of the strategic planning division of Yongseong Department Store.
Im Se-mi as Seo Ha-jin
A bar owner of Sulo's.
Kwak Si-yang as Kim Shin-won
The head of the design department at Yongseong Department Store.
Supporting
Ban Hyo-jung as Jeong Hyo-sun
Ko Chang-seok as Baek Won-seop
Baek Soo-jung's father.
Kim Young-ah as Kwon In-kyung
Joo-yeon's secretary.
Son Sang-yeon as Baek Soo-bin
Kim Woo-gyeom as Yang Jun-su
Lim Young-joo as Choi Na-na
Others
Oh Eui-shik as TVXQ-tip
Production and release
Development
My Dearest Nemesis was developed under the working title Black Salt Dragon. The series is based on a webtoon by Hye Jin-yang. It was directed by Lee Soo-hyun, who directed Delightfully Deceitful, and the screenplay is wrote by writer Kim Soo-yeon. It was produced by Studio N and planned by Studio Dragon.
Casting
On April 2, 2024, it was reported that Moon Ga-young and Choi Hyun-wook were in talks to be casts. On July 12, tvN announced that Moon and Choi had been cast. On July 15, Im Se-mi and Kwak Si-yang reportedly confirmed their appearances.
Release
The series premiered on tvN on February 17, 2025, and aired every Monday and Tuesday at 20:50 (KST). It is also available for streaming on TVING in South Korea, U-Next in Japan, Vidio in Indonesia, and Viki in selected regions. The series topped in Viki in 136 countries, including in the U.S., the U.K., France, Brazil, Mexico, India and the United Arab Emirates.
